Today's noteworthy downgrades include: Applied Materials (AMAT) downgraded to Neutral from Buy at Nomura... CGI Group (GIB) downgraded to Hold from Buy at Societe Generale... Celladon (CLDN) downgraded to Neutral from Buy at H.C. Wainwright... Coherent (COHR) downgraded to Neutral from Buy at B. Riley... Commerzbank (CRZBY) downgraded to Neutral from Overweight at JPMorgan... Continental Resources (CLR) downgraded to Neutral from Accumulate at Global Hunter... Crestwood Equity (CEQP) downgraded to Neutral from Overweight at JPMorgan... Crestwood Midstream (CMLP) downgraded to Neutral from Overweight at JPMorgan... Discovery (DISCA) downgraded to Sell from Neutral at UBS... Ericsson (ERIC) downgraded to Neutral from Buy at Goldman... First Merchants (FRME) downgraded to Market Perform from Outperform at Fig Partners... MDC Partners (MDCA) downgraded to Sector Perform from Outperform at RBC Capital... Medidata (MDSO) downgraded to Hold from Buy at Jefferies... Melco Crown (MPEL) downgraded to Underweight from Equal Weight at Morgan Stanley... SM Energy (SM) downgraded to Accumulate from Buy at Global Hunter... Springleaf (LEAF) downgraded to Neutral from Outperform at Macquarie... iGATE (IGTE) downgraded to Sector Perform from Outperform at RBC Capital.